Greg Beaver has released the latest version of the Chiara_PEAR_Server class, according to this new blog post.

A few moments ago, I released Chiara_PEAR_Server 0.18.4. This release has a few internal code organizations and fixes one significant bug.

This release is still alpha, as more work on the API needs to be done. It has been a while, as all 4 developers have been tied up by other things. However, the package is still alive and will be developed further until it is far friendlier and much nicer to work with on the backend as well.